policy: load JSON schema into domain descriptor at start time.

chrome/browser/policy/policy_service.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_POLICY_POLICY_SERVICE_H_
 #define CHROME_BROWSER_POLICY_POLICY_SERVICE_H_
 
 #include <map>
 #include <string>
 
@@ skipping 78 matching lines @@
   // Registers the |descriptor| of a policy domain, indicated by
   // |descriptor->domain()|. This overrides the descriptor previously set, if
   // there was one.
   // This registration signals that there is interest in receiving policy for
   // the components listed in the descriptor. The policy providers will try to
   // load policy for these components, and validate it against the descriptor.
   // Cached data for components that aren't registered anymore may be dropped.
   virtual void RegisterPolicyDomain(
       scoped_refptr<const PolicyDomainDescriptor> descriptor) = 0;
 
+  // Registers a policy domain without triggering a policy load.
+  virtual void InitialRegisterPolicyDomain(
+      scoped_refptr<const PolicyDomainDescriptor> descriptor) = 0;
+
   virtual const PolicyMap& GetPolicies(const PolicyNamespace& ns) const = 0;
 
   virtual scoped_refptr<const PolicyDomainDescriptor> GetPolicyDomainDescriptor(
       PolicyDomain domain) const = 0;
 
   // The PolicyService loads policy from several sources, and some require
   // asynchronous loads. IsInitializationComplete() returns true once all
   // sources have loaded their policies for the given |domain|.
   // It is safe to read policy from the PolicyService even if
   // IsInitializationComplete() is false; there will be an OnPolicyUpdated()
@@ skipping 44 matching lines @@
   PolicyService* policy_service_;
   PolicyNamespace ns_;
   CallbackMap callback_map_;
 
   DISALLOW_COPY_AND_ASSIGN(PolicyChangeRegistrar);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_POLICY_SERVICE_H_